Read Sony DCR-TRV900 Service Manual online
13
2-2-2. Loading the Progressive Picture to Memory
(1) The video output signal from the camera block is stored in the DRAM (IC752)
as many as picture elements of one frame. The video signal is converted
here to the VGA (640
×
460) size.
(2) When the video signal equivalent to picture elements of one frame, is stored,
it is read by the HONEY (IC756).
(3) The read-out data is sent to the JPEG (IC757).
(4) The data is then compressed in the JPEG (IC757) and is sent to the DRAM
(IC758).
(5) The data from DRAM (IC758) is added by the header information and the
directory that are supplied from the DS controller I the PC card I/F (IC701).
The added information is stored in the PC card.
2-2-3. Reading the Progressive Picture from Memory to VFD
(6) The compressed data that is output from the PC card, takes the two paths.
The picture information only of the compressed data, is sent to the DRAM
(IC758). The header information and directory only of the compressed data,
is sent to the DS controller.
(7) The picture information is expanded by the JPEG (IC757).
(8) The read-out data from the PC card, is sent to the DRAM (IC752) through
the HONEY (IC756).
(9) The picture information is sent to the VFD (IC1501) through the HONEY
(IC756).
Signal processing block diagram of the still picture
(1)
IC756
HONEY
JPEG
DRAM (4M)
IC701
IC758
IC757
IC752
IC751
DRAM (16M)
(2)
(3)
(4)
(5)
(6)
DATA BUS
ADDRESS BUS
from CAM, BBI,
VFD
VFD
PC card I/F
(9)
(8)
(7)
IC1501
VFD
DS controller
(SH2)
Recording medium
(PC card)
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